Hypothesis

In this study, we analyzed the correlations between frequent mutations in the VHL gene and clinical phenotypes in the largest Chinese VHL cohort to date. In total, we screened 540 patients from 187 unrelated VHL families and identified 126 different VHL mutations. Furthermore, we identified 19 frequent mutations and four mutation hotspots and further investigated the genotype–phenotype correlations. Notably, patients or families with the VHL disease have a range of different phenotypes. A variety of factors may contribute to this diversity of phenotypes, including the type of VHL mutation, the site of the mutation, and ethnic background.

GroupID: 14

DiseaseAssertion: assumed VHL

GroupSize: 11

GroupNumberMales: N/A

GroupNumberFemales: N/A

GroupEthnicity: Chinese

GroupAgeRange: 28.8Y +/- 19.6Y

GroupInfo: Clinical characteristics of 258 patients from 80 unrelated Chinese families were reported in this study. Grouped by the 21 mutations found, 2 families with 11 members total were described, and phenotypic information was given for this group.

GroupPresentingHPOs: HP:0010797; HP:0005584; HP:0001737; HP:0009715 (hemangioblastoma, renal cell carcinoma, pancreatic cysts, papillary cystadenoma of the epididymis)

GroupHPOFreeText: 6 of the 11 members presented with CNS hemangioblastoma (with a mean age of 33.0Y), renal cell carcinoma in 4 members (at the mean age of 42.3Y), pancreatic cysts in 4 members (also at the mean age of 42.3Y), and a papillary cystadenoma of the epididymis genital system tumor (epididymis or broad ligament) in 1 member at the age of onset of 10Y

GroupNotHPOs: HP:0009711; HP:0002666 (retinal capillary hemangioma, pheochromocytoma)

GroupNotHPOFreeText: No patients presented with retinal capillary hemangioma or pheochromocytoma

GroupPreviousTesting: N/A

PreviouslyPublished: see more information in 29330336 (2 families of 11 people total), and 28388566 (as family #52 (9 members), and #53 (2 members)).

SupplementalData: N/A

Variant: c.464-1G>C

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: 223220; https://www.ncbi.nlm.nih.gov/clinvar/variation/223220/

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: splice_site_variant

CivicName: Splice Site (c.464-1G>C)

MultipleGeneVariants: N/A

InheritancePattern:AutosomalDominant Ethnicity:Chinese DiseaseEntity:hemangioblastoma DiseaseEntity:renalcellcarcinoma DiseaseEntity:pancreaticcysts DiseaseEntity:papillarycystadenomaoftheepididymis AgeOfPresentation:papillarycystadenomaoftheepididymis:10 Mutation:Germline AssumedRefSeq:NM_000551.3 ClinVarID:223220 ClinVarID:Yes MutationType:splice_site_variant cDNAposition:464 CivicName:SpliceSite(c.464-1G>C) Familial FamilyCohort inferred_gene_hgnc:12687 inferred_gene_source:ClinVar VHL Hypothesis Annotation

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